Learn Linux

great app. it teaches a lot. two problmes tho. one problem is that usually the quiz asks questions that wasnt covered on the earlier lessons. is there something i have missed? like honest nothing connecting to what was learnt, some questions yes but then some others that are completely not in the previous lessons. the other very grave problrm is that i cannot scroll on home page and other pages! immediately going to the side, despite scrolling down, and onto the input area. please fix this!